Semiflexible rear sight for firearms.



No. 804,805. PATENTED Nov. 14, 1905. G. H. GARRISON. SEMIFLEXIBLE REARSIGHT FOR FIREARMS.

APPLICATION FILED JULY 28.1904.

mum}! 6 ment of the pin 7 in the slot 6.

on rnn STATES PATENT oinrron.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed July 28,1904. Serial No. 218,536.

To all whom it may concern.-

Be it known that I, GnoReE H. GARRIsoN, a

citizen of the United States, residing at Glad-- stone, in the county ofDelta and State of Michigan, have invented new and useful 1m provementsin Semiflexible RearSights for Firearms, of which the following is aspecification.

This invention relates to rear sights for firearms; and its object is toprovide a sight that has a slight degree of flexibility in a forward andbackward direction, so that it will yield when struck by a bush orbranch or the person of the hunter, but will at once resume its normalposition when released. I

To this end the invention consists in a sight having the upright hingedto the base and provided with a spring which holds it yieldingly in itsupright position. Means are also provided for permitting the upright tobe folded down when the sight is not needed.

In the accompanying drawings, Figure 1 is a side elevation of a portionof a rear sight embodying my improvements. Fig. 2 is a vertical sectionof the same. Fig. 3 is a crosssection thereof. Fig. 4c shows the spring.Fig. 5 shows the dog for holding the pin and the spring out of operativeposition. Fig. 6 shows the manner inwhich the dog effects this result.Fig. 7 is a sectional elevation of a modification. Fig. 8 shows thebase-plate therefor. Fig. 9 is a cross-section thereof.

Referring first to Figs. 1 to 6, the base-plate 1 has upon it twoparallel ears 2, between which is hinged on the pivot 3 the knuckle 4:of the upright 5. In one side of the knuckle is a radial notch 6, inwhich is a loose transverse pin 7, lying with its axis parallel with thepivot 3 and projecting at each end beyond the knuckle, so as to engagewith the V-shaped cam 8 in each of the ears 2. A flat spring 9 partlyencircles the knuckle between the ears, one end of the spring beingprovided with a flange 10, which enters a suitable notch in the knuckle,while the other end of said spring has a head 11 bearing on the pin 7and tending to hold it at the bottom of the slot 6. The knuckle isbifurcated, as shown in Fig. 3, to admit a thin circular disk or dog 12,which is pivoted on the pivot 3 and is cut away at 13, so as to avoidany interference with the move- At one end of the cut-away portion is anose 14 and at the other end a tail 1.5, the latter projecting beyondthe periphery of the knuckle.

The operationis as follows: With the parts standing as shown in Fig. 1,the spring forces the pin to the bottom ofthe slot, and the pressureofthe projecting ends of the pin on the inclinedsurfaces of the cams 8causes the pin to ride down to the bottom of the V, and thus determinethe normal position of the upright 5. Any deflection of theuprighteither way from this position forces the pin to ride up one ofthe inclines and puts the spring under tension, so that the instant theupright is released the spring will urge the pin inward and bring theupright back to its normal position. The deflection of the upright islimited by lips 16 at the 'ends of the inclines which stop the furthermovement of the pin.

In case it is desired to fold the upright down upon the base-plate outof the way'the upright isdeflected to the right until the pin strikesthe lower lip 16, which is beyond the edge of the knuckle. In thisposition thelpin is beyond the edge of the dog, so that the latter canbe rotated byits tail to bring its nose under the pin, as shown in Fig.6. The upright can now be turned to the left, and as the pin cannotreturn into the V-shaped cams it will pass outside of the upper lip 16,which is within the edge of the knuckle, and thus the upright can befolded'down to a position parallel with the base-plate. Shortly afterthe pin has passed the upper lip 16 the tail of the dog will strike thestock of the gun, and the further movement of the upright will unlockthe spring and allow it to seat the pin in the notches 17 in the ears 2.This holds the upright in its folded position, but permits it to belifted up when desired, the pin riding up the curve 18 until it snapsover the upper lip 16 upon theupper incline of the cam.

In the modification shown in Figs. 7, 8, and 9 the base-plate 19 has twoears 20, which have radial slots 21 running up into them from below. Theknuckle 22 of the upright 23 has a V-shaped cam 24 on its periphery withlips 25 at its ends. The pin 26 rides up and down in the slots 21, beingurged up against the cam by a flat spring 27, secured to the base-plateand having a projecting finger-hold 28. When the upright is to be foldeddown out of the way, the spring is depressed by means of thefinger-hold, so as to .permit the lips 25 to pass by the pin. Theknuckle is preferably pro- Vided with one or more notches 29, so locatedthat when the upright has been folded down the pin will engage therewithand hold the parts in position.

Having thus described my invention, what I claim is 1. A rear sight forfirearms, comprising a base, an upright pivoted thereto, a transversepin parallel with the axis of the pivot, a spring urging said pin towardsaid pivot, and a V- shaped cam with which said pin cooperates to holdthe upright yieldingly in a normal position.

2. A rear sight for firearms, comprising a base, an upright, pivotedthereto, a transverse pin parallel with the axis of the pivot, a springurging said pin toward said pivot, and a V- shaped cam with which saidpin cooperates to hold the upright yieldingly in a normal position, saidcam having lips at its ends to limit the play of the parts.

3. A rear sight for firearms, comprising a base, an upright pivotedthereto, a transverse pin parallel with the axis of the pivot, a springurging said pin toward said pivot, and a V- shaped cam with which saidpin cooperates to hold the upright yieldingly in a normal position, saidcam having lips at its ends to limit the play of the parts, and meansfor Withdrawing said pin beyond said lips to permit a free movement ofthe upright.

4:. A rear sight for firearms, comprising a base-plate provided withears having V -shaped cams, an upright having a knuckle pivoted betweensaid ears and provided with a radial slot, a pin lying in said slot andengaging with said cams, and a spring urging said pin inwardly in saidslot.

5. A rear sight for firearms, comprising-a base-plate having earsprovided with VV-shaped cams, an upright having a knuckle pivotedbetween said ears and provided with a radial slot, a pin lying in saidslot and engaging with said cams, and a flat spring partly encirclingsaid knuckle and having a head bearing on said pin.

6. A rear sight for firearms, comprising a base-plate havingears'provided with V-shaped cams, an upright having a knuckle pivotedbetween said ears and provided with a radial slot, a pin lying in saidslot and engaging with said cams, a spring urging said pin inwardly, anda dog pivoted concentric with the knuckle and adapted to pass under saidpin.

7. The combination witha base-plate having ears provided with Vshapedcams having lips at their ends, of a bifurcated knuckle pivoted betweensaid ears and having a radial slot, a pin in said slot, a spring bearingon said pin, and a dog pivoted in the fork of the knuckle and having anose adapted to pass under said pin, and a tail projecting beyond theknuckle.

8. A rear sight for firearms, comprising a base-plate, an uprightpivoted thereto and having a radial slot, a pin lying in said slot, a V-shaped cam on the base-plate with which said pin cooperates, a springurging said pin toward said cam, and means which may be adjusted inposition to hold the pin out of contact with said cam.

9. The combination with the base-plate 1 having the ears 2 provided withthe V-shaped cams 8,the lips 16,the notch 17 and the curve 18, of theuprights having the knuckle5 provided with the radial slot 6, thetransverse pin 7, the flat spring 9 partly encircling the knuckle andbearing on the pin, and the .dog 12 having the nose 14 adapted topassunder the pin and the tail 15 projecting beyond the periphery of theknuckle.

In testimony whereof I have signed my name to this specification in thepresence of two sub scribing witnesses.

GEORGE H. GARRISON.

Witnesses: I

ELMER BEACH, W. L. MARBLE.

